US3487671A - Methods of and apparatus for rolling structural shapes such as h,i and rails - Google Patents

Methods of and apparatus for rolling structural shapes such as h,i and rails Download PDF

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Publication number
US3487671A
US3487671A US527822A US3487671DA US3487671A US 3487671 A US3487671 A US 3487671A US 527822 A US527822 A US 527822A US 3487671D A US3487671D A US 3487671DA US 3487671 A US3487671 A US 3487671A
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Prior art keywords
rollers
rolls
pass
rolling
vertical
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US527822A
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English (en)
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Raymond Stammbach
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De Wendel et Cie SA
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De Wendel et Cie SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088—H- or I-sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/12—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel in a continuous process, i.e. without reversing stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass

Definitions

  • the bar is worked at each pass between two horizontal rolls and two vertical rollers and then, after at least one pass of said passes, between two edging rollers for the control of the flange width.
  • the parallel-flange final section was obtained by using roller supports mounted in cavities provided to this end in the roll of conventional stands, or on a separate universal stand mounted as a rule on the mill line or sometimes at the rear thereof.
  • the method of this invention is characterized primarily in that the rolling operation is carried out by conventional three-high stands having mounted between their rolls a plurality of supports equipped with complementary rollers having their axis disposed vertically, with the addition of at least one additional frame with edging rollers having horizontal axis, the bar being introduced into the nip of the edging of this additional frame after at least one pass in.
  • FIGURE 1 is an elevational view showing the roll arrangement of a three-high stand according to the teachings of the method of the present invention
  • FIGURES 2 and 3 show respectively for comparative purposes the preliminary shape in the conventional rolling process utilized up to now, and the preliminary shape for the universal rolling process;
  • FIGURE 4 is a section taken along the line 4-4 of FIGURE 1;
  • FIGURE 5 is another section taken along the line 5-5 of FIGURE 1;
  • FIGURE 6 is a medial vertical section taken along the line 6-6 of FIGURE 1;
  • FIGURE 7 is a fragmentary elevational view as seen in the direction of the arrows 77 of FIGURE 6;
  • FIGURE 8 is a fragmentary vertical section showing the bar worked by the edging rollers
  • FIGURE 9 is another fragmentary section showing means for adjusting the position of the rollers having vertical axis
  • FIGURE 10 is an elevational section similar to FIG- URE 6 but showing an arrangement wherein the final pass takes place in a separate or auxiliary finishing stand;
  • FIGURE 11 is an elevational fragmentary view taken from the front of the three-high stand, showing the delivery sides of the lower cross member carrying the edging rollers and the entry side of the upper cross member;
  • FIGURE 12 is a plan view of the arrangement shown in FIGURE 11;
  • FIGURE 13 is an elevational view showing the horizontal rolls and the vertical rollers, as well as the edging rollers (dotted lines) of a stand constructed according to the teachings of this invention for rolling rails, and
  • FIGURE 14 is a diagram illustrating the transformation of a conventional American rolling mill for the manufacture of parallel-flanged beams by the method of this invention.
  • the initial or blank section A (FIGURE 3) is obtained by using a conventional stand. It must be strictly symmetrical like the one obtained with the preparatory or leader-pass of the universal mills. It is characterized, and differs from the normal shape illustrated in FIGURE 2, in that it has thicker and shorter flanges, thus considerably facilitating the rolling work from the roll-wear and the guiding points of View. In fact, the surface exposed to the rolling action is reduced, thus decreasing frictional contacts. Moreover, the symmetry of this shape makes it unnecessary to use the guide means usually resorted to for rolling asymmetric shapes, because of the tendency of the latter to wind themselves up as they emerge from the roll stand.
  • FIGURE 1 illustrates a conventional three-high stand wherein the horizontal rolls E, B and C have identical groups of roll pass contours E B C E B C -E B C Disposed between these rolls according to this invention are vertical rollers D-D, F-F, and H-H having vertical axis and therefore termed hereinafter vertical rollers.
  • Each vertical roller D-D, F-F is trunnioned in roller supports I secured by studs 1" to the upper and lower cross members fastened to the housings 0 of the threehigh stand (see FIGS. 4 and 5).
  • the vertical rollers have a rolling surface operating in conjunction with two roll pass contours of the groups B B C E B C E B C3 of the horizontal rolls E, B and C, the shape of this surface corresponding to the contour of the bar or shape to be rolled.
  • the vertical rollers. D-D', F-F and H-H' are disposed as follows in the three-high stand:
  • the vertical rollers F-F' are interposed between the rolls E and B, the pass line of the said pair of vertical rollers being in the vertical symmetry plane of the horizontal rolls, said symmetry plane being the one that is perpendicular to the axis of the horizontal rolls.
  • the other vertical rollers DD and H-H' are disposed between the horizontal rolls B and C, symmetrically in relation to the said symmetry plane.
  • the first pass (or pass No. 1) is effected between the rolls B and C and the vertical rollers DD' (lower left-hand portion), the second pass (pass No. 2) between rolls E and B and the vertical rollers F-F' (central upper portion of the figure) and the third pass (pass No. 3) between rolls B and C and the vertical rollers H-H' (lower right-hand portion of the figure).
  • the edging horizontal rollers G, G are mounted on an additional frame secured to the cross member 0 (see FIGURE 4) which is fastened to the housing 0 of the three-high stand.
  • the blank section A is introduced towards the front of the device, as seen in FIGURE 1, between rolls B and C of the three-high stand, as explained hereinabove.
  • the metal is wrought concentrically between rolls B and C and rollers D-D during pass No. 1 (see FIGURE 1) so as to widen the flanges A of the preliminary shape A.
  • Pass No. 2 also takes place between rolls B and E and rollers F-F, but as the bar emerges from the stand it passes between the edging rollers G-G whereby the width to the flanges is reduced (without interfering with the web) to sucha dimension that the widening produced by the third and last pass taking place between rolls B and C and rollers H-H' gives the desired width to the flanges in the final shape.
  • the bar nipped between the horizontal rolls B and E is driven between the edging rollers G-G having a horizontal axis, of which the work consists simply in edging the tips of the flanges, as shown in FIGURE 8.
  • the web section is not altered by the rollers, as in an edging stand of a universal mill.
  • the shape Since, due to the rolling action, the shape has a flange width decreasing towards the ends of the bar, the web is still engaged by the horizontal rolls while the flanges are no more worked by the edging rollers, so that the bar is ejected by the horizontal rolls and its inherent inertia.
  • the horizontal rolls B, C and E are designed to be strictly identical; in other words, as already stated, all the roll pass cont-our groups E B C -E B C E B C are exactly the same (see FIG. 1).
  • This permits the use of sets of four rolls, as for two successive mountings or roll changes, one may invert the positions of the rolls E and C respectively, the roll pass contours E E of the upper horizontal roll E and the middle roll pass contour C of the lower horizontal-roll C which remained inoperative in the first mounting becoming operative in the second one, the worn intermediate roll B being replaced by a new one.
  • the position of the vertical rollers (D-D', F-F' and H-H may be adjusted by using either wedge members I acting on the roller supports I as shown in FIGURES 5 and 9, or screw and nut devices.
  • the position of the edging rollers G-G' is adjusted both laterally and vertically by means of pressure screws J, I, J and 1 (FIG- URE 7).
  • Guide members K are mounted between the horizontal rolls E and B (FIGURE 6) and the edging rollers G-G' to keep the bar in good direction. These guide members are stationary, in the example illustrated in FIGURE 6, but they may, if desired, be provided as usual in conventional rolling mills, with ascrew or counter-weight adjustment device mounted on the cross member 0 fastened to the housings 0 of the three high stand.
  • the final pass is carried out in a separate stand where the bar is worked concentrically between two horizontal rolls and two vertical rollers (not shown, since it has no specific features).
  • the arrangement of the edging rollers G-G differs.
  • two sets of edging rollers LL', M-M' must be mounted on the lower cross member 8, as shown in FIGURES 10', 11 and 12.
  • pass No. 1 (see arrow f is shown in the left-hand side of the figure: the bar is passed first between the rolls B and C and the vertical rollers, then between the edging roller-s L-L. It isthen rolled during pass No. 2 between the horizontal rolls E and B and the vertical rollers (arrow f As it emerges from this pass (without edglng rollers) the bar is introduced (arrow f between the honzontal rolls B and C and the vertical rollers, this third passage becoming then the fore-fiinshing passage. The bar goes then through the edging rollers MM before its last passage in the separate finishing stand where it is rolled as already described.
  • edging rollers may be mounted according to requirements at the output of any rolling pass according to the design used, as will be explained presently in connection with the manufacture of rails, for example.
  • FIGURE 13 illustrates a typical application to this type of shape. If the rolling process requires more than three universal passes, more passes can be made by interposing always a set of edging rollers P-P' and RR', dotted lines after two successive passes the last edging pass must compulsorily take place before the finishing pass.
  • the rolling method according to this invention is extremely advantageous in that the use of reversing D.C. motor can be dispensed with while suppressing the very complicated and therefore costly automation means used for their regulation, the speed synchronization or timing of the two motors operated in series at different rates according to the type of pass to be performed, the relative positioning (requiring on the other hand a very high degree of precision) of the six rolls of the two three-high stands, the accelerations, decelerations and upstream and downstream sequences of auxiliary installations.
  • the investments are therefore reduced considerably in comparison with those required in the case of conventional installations such as designed of late.
  • the method of the present invention reduces roll cost and affords definitely increased bar elongations With respect to conventional, alternately male and female grooves. Guiding the bars at the outlet is facilitated and any incident due to adjustment, wear and to the ends of defective bar is practically eliminated.
  • the reference letter S designates the reversing roughing stand; T is the three-high stand of the existing mill which is driven from the non-reversing variable-speed motor T.
  • T is the three-high stand of the existing mill which is driven from the non-reversing variable-speed motor T.
  • another three-high stand U-equipped with vertical roller supports for universal passes (as in the case illustrated in FIGURE 1) is added, with additional frames U carrying edging rollers U according to this invention.
  • V designates a nonreversing two-high stand with vertical roller supports acting as a finishing stand driven by a motor V.
  • a device for rolling sections such as I, H, rails, and the like, comprising in combination a three-high stand having horizontal rolls with similar roll pass contours of a shape corresponding to the shape of the section to be rolled, a plurality of rollers having vertical axes, said vertical axes rollers being disposed between said horizontal rolls, roller supports for said vertical axes rollers, each of said vertical axes rollers being trunnioned in a roller support that carries it, cross members fastened to said three-high stand, said roller supports being secured to said cross members, and said vertical axes rollers having a rolling surface coacting with the roll pass contours of said horizontal rolls, said vertical axes rollers being distributed in pairs between said horizontal rolls, additional frames, a plurality of horizontal axes edging rollers, said edging rollers being mounted in pairs in said additional frames, said horizontal axes of said edging rollers being in a plane parallel to the common vertical plane of said horizontal rolls axes, said edging rollers
  • one of said pairs of vertical axes rollers is disposed between said horizontal rolls, the rollers of said pair of vertical axes rollers being disposed symmetrically with respect to the medial vertical plane of said horizontal rolls, said medial vertical plane being perpendicular to the common vertical plane of said horizontal rolls, the other pairs of vertical axes rollers being disposed between said horizontal rolls symmetrically in relation to said medial vertical plane.
  • each roller support carrying a vertical axis roller comprises means to permit the adjustment of the position of said vertical axes roller in relation to the roll pass contours of said horizontal rolls.
  • top, intermediate and bottom horizontal rolls of the said threehigh stand have the same roll pass contours so as to require only four horizontal rolls for two successive rollings or mountings, involving the substitution of the top horizontal roll by the bottom and strictly identical horizontal roll, and vice versa, and the replacement of the intermediate horizontal roll by another one.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US527822A 1965-02-22 1966-02-16 Methods of and apparatus for rolling structural shapes such as h,i and rails Expired - Lifetime US3487671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6485A FR1434248A (fr) 1965-02-22 1965-02-22 Perfectionnements au laminage de fers profilés en eta ou de sections analogues

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US3487671A true US3487671A (en) 1970-01-06

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US527822A Expired - Lifetime US3487671A (en) 1965-02-22 1966-02-16 Methods of and apparatus for rolling structural shapes such as h,i and rails

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US (1) US3487671A (US07579456-20090825-P00002.png)
AT (1) AT273859B (US07579456-20090825-P00002.png)
BE (1) BE676781A (US07579456-20090825-P00002.png)
DE (1) DE1527684A1 (US07579456-20090825-P00002.png)
FR (1) FR1434248A (US07579456-20090825-P00002.png)
GB (1) GB1087839A (US07579456-20090825-P00002.png)
LU (1) LU50498A1 (US07579456-20090825-P00002.png)
NL (1) NL6602212A (US07579456-20090825-P00002.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106238457A (zh) * 2016-08-17 2016-12-21 安徽晋源铜业有限公司 一种高精度铜杆冷轧装置
CN113414240A (zh) * 2021-06-29 2021-09-21 首钢水城钢铁（集团）有限责任公司 应用于轧钢工艺的粗轧轧辊孔型配型方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1946547B1 (de) * 1969-09-13 1971-10-28 Meinig Karl Stossverbindung fuer Kanalabschnitte
DE2918807A1 (de) * 1979-05-10 1980-11-20 Sack Gmbh Breiteneinstellbares walzgeruest
GB2101025B (en) * 1981-06-30 1985-10-02 Kawasaki Steel Co Rolling steel rods and wires with grooveless rolls
DE3521949C2 (de) * 1984-06-25 1994-05-26 Schloemann Siemag Ag Universalwalzgerüst
FR2612094B1 (fr) * 1987-03-13 1994-03-18 Unimetal Ste Fse Aciers Longs Procede d'utilisation d'une cage finisseuse semi-universelle pour le laminage universel des rails, cage et cylindres pour sa mise en oeuvre
CN102921866A (zh) * 2012-10-26 2013-02-13 无锡欧亚电梯设备有限公司 一种锻压机床用导轨装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US311250A (en) * 1885-01-27 Demelitts
US395350A (en) * 1889-01-01 Apparatus for rerolling old rails
US526466A (en) * 1894-09-25 Bearings for rolls of rolling-mills
US939167A (en) * 1906-10-29 1909-11-02 Hugo Sack Universal rolling-mill.
US1201239A (en) * 1913-10-11 1916-10-17 Nicholas A Becker Railroad-rail-rolling mill.
US1812248A (en) * 1928-12-29 1931-06-30 William C Oberg Roll
US2016141A (en) * 1931-04-01 1935-10-01 Bethlehem Steel Corp Rolling mill guide
US2064453A (en) * 1936-03-30 1936-12-15 Republic Steel Corp Forming mill

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US311250A (en) * 1885-01-27 Demelitts
US395350A (en) * 1889-01-01 Apparatus for rerolling old rails
US526466A (en) * 1894-09-25 Bearings for rolls of rolling-mills
US939167A (en) * 1906-10-29 1909-11-02 Hugo Sack Universal rolling-mill.
US1201239A (en) * 1913-10-11 1916-10-17 Nicholas A Becker Railroad-rail-rolling mill.
US1812248A (en) * 1928-12-29 1931-06-30 William C Oberg Roll
US2016141A (en) * 1931-04-01 1935-10-01 Bethlehem Steel Corp Rolling mill guide
US2064453A (en) * 1936-03-30 1936-12-15 Republic Steel Corp Forming mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106238457A (zh) * 2016-08-17 2016-12-21 安徽晋源铜业有限公司 一种高精度铜杆冷轧装置
CN113414240A (zh) * 2021-06-29 2021-09-21 首钢水城钢铁（集团）有限责任公司 应用于轧钢工艺的粗轧轧辊孔型配型方法

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BE676781A (US07579456-20090825-P00002.png) 1966-07-18
LU50498A1 (US07579456-20090825-P00002.png) 1966-04-22
AT273859B (de) 1969-08-25
NL6602212A (US07579456-20090825-P00002.png) 1966-08-23
DE1527684B2 (US07579456-20090825-P00002.png) 1970-07-30
GB1087839A (en) 1967-10-18
DE1527684A1 (US07579456-20090825-P00002.png) 1970-07-30
FR1434248A (fr) 1966-04-08

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